/* * rssharedptr.h * * Created on: 16 Apr 2014 * Author: crispy */ #ifndef RSSHAREDPTR_H_ #define RSSHAREDPTR_H_ #include /*! * Not thread safe!! */ template class RsSharedPtr { public: RsSharedPtr() : mShared(NULL), mCount(NULL) {} RsSharedPtr(T* shared) : mShared(shared), mCount(new int(0)), mSharedPtrMutex(new RsMutex("SharedMutex")) { mCount++; } RsSharedPtr(const RsSharedPtr& rsp) { rsp.lock(); mShared = rsp.mShared; mCount = rsp.mCount; mCount++; mSharedPtrMutex = rsp.mSharedPtrMutex; rsp.unlock(); } void operator=(const RsSharedPtr& rsp) { rsp.lock(); mSharedPtrMutex = rsp.mSharedPtrMutex; DecrementAndDeleteIfLast(); mShared = rsp.mShared; RepointAndIncrement(rsp.mCount); mSharedPtrMutex->unlock(); } T* release() { lock(); mCount--; T* temp = mShared; mShared = NULL; unlock(); return temp; } T* get() { return mShared; } T& operator*(){ return *mShared; } T* operator->(){ return mShared; } ~RsSharedPtr() { DecrementAndDeleteIfLast(); } private: void DecrementAndDeleteIfLast() { mCount--; if(mCount == 0 && mShared != NULL) { delete mShared; delete mCount; } mShared = NULL; mCount = NULL; } void RepointAndIncrement(int* count) { mCount = count; mCount++; } void lock() const { mSharedPtrMutex->lock(); } void unlock() const { mSharedPtrMutex->unlock(); } private: int* mCount; T* mShared; RsMutex* mSharedPtrMutex; }; template RsSharedPtr rs_make_shared(T* ptr){ return RsSharedPtr(ptr); } #endif /* RSSHAREDPTR_H_ */